Static structures (e.g. – buildings) – Machine or implement
Patent
1985-02-27
1987-02-03
Kittle, John E.
Static structures (e.g., buildings)
Machine or implement
49DIG1, 49DIG2, 52656, 52788, E06B 917
Patent
active
046400788
ABSTRACT:
The invention relates to a composite bar for example for window or door frames or shutters comprising a plastic hollow profile bar with an inner and outer surface.
Adjacent said surfaces substantially parallel thereto a metal flange is inserted into the interior of the plastic hollow profile bar. To increase the resistance to bending of this frame with respect to forces perpendicular to the window pane or door leaf without substantially reducing the thermal insulation the two metal flanges are connected together in shear-transmitting manner without metallic contact.
REFERENCES:
patent: 2750637 (1956-06-01), Browne
patent: 3093217 (1963-06-01), Doede
patent: 3332170 (1967-07-01), Bangs
patent: 4113905 (1978-09-01), Kessler
patent: 4271238 (1981-06-01), Braithwaite et al.
Gebruder Kommerling Kunststoffwerke GmbH
Kittle John E.
Ryan Patrick J.
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